/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { ts, CallExpression, native, HomeCheckHint } from "qvog-dsl";

const SEVERITY = 3;
const DOC_PATH = 'docs/no-null-access-dsl.md';
const DESCRIPTION = 'For rendering large datasets with ForEach, LazyForEach should be used to implement on-demand loading. LazyForEach only renders data in the visible area, which can significantly improve performance and memory usage efficiency.';

function call2Ident(callExpression: ts.CallExpression | undefined): ts.Identifier | undefined {
    if (callExpression !== undefined) {
        let sig = callExpression.expression;
        if (sig.kind === ts.SyntaxKind.Identifier) {
            return sig as ts.Identifier;
        }
    }
    return undefined;
}

export default native<HomeCheckHint>()()
    .match(CallExpression)
    .when((node: ts.CallExpression): boolean => {
        let callExpression = node;
        let iden = call2Ident(callExpression);
        return iden !== undefined && iden.escapedText === 'ForEach';
    })
    .report({
        severity: SEVERITY,
        description: DESCRIPTION,
        docPath: DOC_PATH,
    });

